Fuel mixer for internal-combustion engines



w Nov. 4, 1930. J. MclNTosH 1330326 FUEL MIXER-FOR NTERNAL COMBUSTdN ENGINES Filed May 2', 1928 IN VEN TOR 7)?? ATTORNEY Patentecl Nov. 4, 1930 a JAMES MOIN'rosH, or cLEfvnLA'nD Hnicn'i'.s; orIoj*` v i FUEL MIXERIOR INTERNAn-corrnus'rron;ENGNES'i' application filea May 2, V1:9281serialiimfzmgiai. i

This inventon relates to fuel mixers for internal combustion engines and consists in i' certain improvements in construction thereof and willV be hereinafter fully described and 5 pointed out inthe claim. l

'The invention is .especially useful in cono vnection. with' ,engines where the range of power output is great as in the usual automobile. 10, The primary object of the invention is to provide an improved lapparatus for 'preparing and heating a charge of inixture' andv thus `equalize the .fuel value delivered to each combustion space. A'further and very important object is the provision of an improved manifold structure embodying means to atomize a charge.

A further and important' object is to arrange' the several essential parts so that there is '(what is essential at low Speeds and light loads) an increase in the Velocity of the flow of -mixture at the point of distribution, advantage is taken' of the value of a Vent-uri tube into which there is a nozzle and the constriction and nozzle action is used to speed up the flow and atolnize the charge of inixture'fiowing from the carburetor, the

increased Velocity at the point of charge division and the action of diverging spirally arranged nozzle jets produce theV effect' es-` sential to break up the Vparticles of gaso-line or 'other liquids that tend to combine on light loads due to the relatively slow, velocities in throttled conditions.

VVith the above mentioned and other ends in view, the invention consists in 'the novel construction, arrangement and combination of parts, hereinafter described and `illustrated in the accompanying drawings, in

F'ig. v1 is a section of an intake pipe between a carb'uretor and engine cylinder, 'the section indicating the features involved. o i Fig. 2 is a front .'sectional elevation of a conventional inlet manifold fordelivering a charge of. mixture from a carburetoroto a multiple cylinder engine where there is shown the preferred embodiment of my invention and the details to control its action.

' Figs. 8 and are details of thevalve in vlets from 'the nozzle.

differentV positions. Similar numerals 'of 'reference designate likev parts. of either figi` ure. i i 1 ry i fIn.F-ig.-'l,inumeral- 1 lindicates an inlet of` `mixture from a carburetor, 2 an outletat- '55 tached to a cylinder, 3 an air cock, 4 atube nozzle terminating with a bulb shape, 5 a series of openings or slots'spirally located, and 6 a constricted area. Arrows indicate direction of flow. i o ,In Fig. 2, l is the inlet for mixture from a carburetor, 2 Outlet or discharge openings for mixture to the cylinde rs,3`a a control cock in position, VL the tube nozzle, 5 a series of openings arranged spirally and forming the out- Figs. 2, 3 and 4 show the three way cock 3a in the different positions used to produce the several results,` and 3h indicates an opening to admit gases and Vapors, and 80 indicates an opening from any source of pressure supply to admit pressure, exhaust gases or air.

Fig. 2 indicates the position of the cock where the fl'oW of exhaust gases is in a straight line passing from 3 to 8d and in doing so .75

omiae a charge and regulate in strength to vattain the besteconomy for any given mixture'.: o Q0.

Thatshown in Fig. 2 is used to accomplishseveral valuable results and more particularly when the engine-is Operating at less than full power. t

i It will beevident'that under throttled con- 9,5 trol this device is more active due to the de'- pression above the throttle and in that re- V spect it `may be said to be controlled by Vthe throttleopening used which makes `itprac-l tically automatic in Vaction and the result is more potent Where it is most essential7 that is When the Velocity of the flow of mixture in the manifold is reduced the action of the nozzle is increased to compensate for the losses due to the failure of a mixture to retain a homogeneous composition.

I claim:

The combination With a fuel Inixtnre pipe having a constriction therein, of a nozzle pro- 10 jecting into the passage within said constriction With 'outlets directed against the flow of mixture in the pipe, said) nozzle having gas and air inlets, an'd a Valve controlling said inlets to Vary the pressure of the gas and air supply thereto the nozzle having a bulb at the end With angular slots therein.

In testimony whereof, I do afiix my signature.

'i-JAMEs MCINTosH- 

